Question

Please solve this assignment using detailed hand calculations and using EPANET 2.0 software

From a reservoir 1,500 m away, a 10 cm diameter main pipe supplies water to six different buildings as shown in the Figure below. The reservoir is 15 m above the datum elevation The positions of the buildings are shown in the Figure below. The height and the water demand of each building are as follows Buildings 9.4 7.0 3.2 3.0 6.0 7.8 9.6 8.5 4.5 10.0 Water demand (Lsec 6.0 If commercial steel pipes are used for the network (downstream from the junction J), A gate valve (K 0.15 when fully opened) is installed in the main pipe immediately upstream from the junction J Using appropriate software a) Determine the correct size of each pipeline. Is the height of tank enough? If not b) If no reservoir was to be used and instead a pump will be used. What are the c) If the water demand varies with time at each building according to the Table below enough determine the proper height. characteristics of the best pump to be used? how would your design be different? Buildings Height (m Water demand 9.4 3.2 6.0 9.6 4.5 Residential Residential Residential Residential Commercial Mosque Buildi Buildin Buildi Buildin Buildin 130 m Gate valve TO m 80 m 1200 m, 15cm Main pipe 90 m 130 m

Answer 1

"Given data: The reservoir is 15m above the datum elevation a reservoir 1,500m away alocm diameter main pipe supplies water to six differences diameter is 15cm The reserrior is 1200m away. Then we consider given structure, I we apply B erooulies equation between A & D Epanet (EA) = ED + h2A 60 = ED + FLQ^2A/1205 ------------ (1) 60 = ED + 0.01 times (15.00) times QA^2/12 times (0.30)^2 ------------------ (2) \r\n II we Apply B.E between "" O & B "": ED = EB + hLB ED = 30 + 0.01 times 800 OB^2/12 times (0.02)^5 ----------- (3) III we Apply BQE between D & C: ED = EC + hLC = 15 + 0.01 times 400 times Q.C^2/12 times (0.2)^2 ------------ (4) QA = QB + QC Equation 3 & 4 = 30 + 0.01 times 800 times QB^2/12 times (0.25)^5"